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From: Alain RODRIGUEZ <arodrime@gmail.com>
Date: Thu, 5 Jun 2014 15:14:43 +0200
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 <CA+VSrLoYKFxua32-7_jtMv-vhTBjqhcdBwRZ5OsvarkrM=0Hjw@mail.gmail.com>
Subject: Re: VPC AWS
To: user@cassandra.apache.org
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I think you can define VPC subnet to be public (to have public + private
IPs) or private only.

Any insight regarding snitches ? What snitch do you guys use ?


2014-06-05 15:06 GMT+02:00 William Oberman <oberman@civicscience.com>:

> I don't think traffic will flow between "classic" ec2 and vpc directly.
> There is some kind of gateway bridge instance that sits between, acting as
> a NAT.   I would think that would cause new challenges for:
> -transitions
> -clients
>
> Sorry this response isn't heavy on content!  I'm curious how this thread
> goes...
>
> Will
>
> On Thursday, June 5, 2014, Alain RODRIGUEZ <arodrime@gmail.com> wrote:
>
>> Hi guys,
>>
>> We are going to move from a cluster made of simple Amazon EC2 servers to
>> a VPC cluster. We are using Cassandra 1.2.11 and I have some questions
>> regarding this switch and the Cassandra configuration inside a VPC.
>>
>> Actually I found no documentation on this topic, but I am quite sure that
>> some people are already using VPC. If you can point me to any documentation
>> regarding VPC / Cassandra, it would be very nice of you. We have only one
>> DC for now, but we need to remain multi DC compatible, since we will add DC
>> very soon.
>>
>> Else, I would like to know if I should keep using EC2MultiRegionSnitch or
>> change the snitch to anything else.
>>
>> What about broadcast/listen ip, seeds...?
>>
>> We currently use public ip as for broadcast address and for seeds. We use
>> private ones for listen address. Machines inside the VPC will only have
>> private IP AFAIK. Should I keep using a broadcast address ?
>>
>>  Is there any other incidence when switching to a VPC ?
>>
>> Sorry if the topic was already discussed, I was unable to find any useful
>> information...
>>
>
>
> --
> Will Oberman
> Civic Science, Inc.
> 6101 Penn Avenue, Fifth Floor
> Pittsburgh, PA 15206
> (M) 412-480-7835
> (E) oberman@civicscience.com
>

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<div dir=3D"ltr">I think you can define VPC subnet to be public (to have pu=
blic + private IPs) or private only.<div><br></div><div>Any insight regardi=
ng snitches ? What snitch do you guys use ?</div></div><div class=3D"gmail_=
extra">

<br><br><div class=3D"gmail_quote">2014-06-05 15:06 GMT+02:00 William Oberm=
an <span dir=3D"ltr">&lt;<a href=3D"mailto:oberman@civicscience.com" target=
=3D"_blank">oberman@civicscience.com</a>&gt;</span>:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">

<div>I don&#39;t think traffic will flow between &quot;classic&quot; ec2 an=
d vpc directly. There is some kind of gateway bridge instance that sits bet=
ween, acting as a NAT. =A0 I would think that would cause new=A0challenges =
for:<br>


</div><div>-transitions=A0</div><div>-clients</div><div><br></div>Sorry thi=
s response isn&#39;t heavy on content! =A0I&#39;m curious how this thread g=
oes...<div><br></div><div>Will</div><div class=3D"HOEnZb"><div class=3D"h5"=
><div>

<span></span><br><div>On Thursday, June 5, 2014, Alain RODRIGUEZ &lt;<a hre=
f=3D"mailto:arodrime@gmail.com" target=3D"_blank">arodrime@gmail.com</a>&gt=
; wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hi guys,<div><br></div><div=
>We are going to move from a cluster made of simple Amazon EC2 servers to a=
 VPC cluster. We are using Cassandra 1.2.11 and I have some questions regar=
ding this switch and the Cassandra configuration inside a VPC.</div>


<div><br></div><div>Actually I found no documentation on this topic, but I =
am quite sure that some people are already using VPC. If you can point me t=
o any documentation regarding VPC / Cassandra, it would be very nice of you=
. We have only one DC for now, but we need to remain multi DC compatible, s=
ince we will add DC very soon.</div>


<div><br></div><div>Else, I would like to know if I should keep using EC2Mu=
ltiRegionSnitch or change the snitch to anything else.</div><div><br></div>=
<div>What about broadcast/listen ip, seeds...?</div><div><br></div><div>


We currently use public ip as for broadcast address and for seeds. We use p=
rivate ones for listen address. Machines inside the VPC will only have priv=
ate IP AFAIK. Should I keep using a broadcast address ?</div><div><br>


</div>
<div>Is there any other incidence when switching to a VPC ?</div><div><br><=
/div><div>Sorry if the topic was already discussed, I was unable to find an=
y useful information...</div></div>
</blockquote></div></div><br><br></div></div><span class=3D"HOEnZb"><font c=
olor=3D"#888888">-- <br>Will Oberman<br>Civic Science, Inc.<br>6101 Penn Av=
enue, Fifth Floor<br>Pittsburgh, PA 15206<br>(M) <a href=3D"tel:412-480-783=
5" value=3D"+14124807835" target=3D"_blank">412-480-7835</a><br>

(E) <a href=3D"mailto:oberman@civicscience.com" target=3D"_blank">oberman@c=
ivicscience.com</a><br>
</font></span></blockquote></div><br></div>

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